How Hybrid Breakdown Can Be Handled in Rice Crossbreeding?

Abstract

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In crosses between genetically divergent parents, traits such as weakness and sterility often segregate in later generations. This hybrid breakdown functions as a reproductive barrier and reduces selection efficiency in crossbreeding. Here, I provide an overview of hybrid breakdown in rice crosses and discuss ways to avoid and mitigate the effects of hybrid breakdown on rice crossbreeding, including genomics-assisted breeding.

Keywords

• genomics-assisted breeding
• Oryza
• reproductive barrier
• sterility
• weakness